XML 84 R110.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Short-Term Borrowings-Schedule (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Short-term Debt [Line Items]                              
Short-term borrowings $ 3,659       $ 4,180       $ 4,650       $ 3,659 $ 4,180 $ 4,650
Securities sold under repurchase agreements [Member]                              
Short-term Debt [Line Items]                              
Short-term borrowings $ 1,072 $ 5,568 $ 3,553 $ 3,714 $ 1,466 $ 2,471 $ 2,743 $ 2,792 $ 3,365 $ 6,494 $ 7,558 $ 4,069 $ 1,072 $ 1,466 $ 3,365
Weighted average interest rate, point in time (percent) 1.75%       4.16%       2.10%       1.75% 4.16% 2.10%
Average during year $ 1,483 $ 8,432 $ 3,433 $ 3,142 $ 3,045 $ 3,550 $ 5,008 $ 5,182 $ 5,457 $ 12,566 $ 9,272 $ 5,050 $ 4,130 $ 4,189 $ 8,100
Weighted average interest rate, during the period (percent)                         3.28% 2.86% 1.28%
Maximum month-end balance                         $ 8,569 $ 5,829 $ 11,351
Commercial paper [Member]                              
Short-term Debt [Line Items]                              
Short-term borrowings $ 2,476       $ 2,532       $ 1,154       $ 2,476 $ 2,532 $ 1,154
Weighted average interest rate, point in time (percent) 2.21%       2.70%       1.56%       2.21% 2.70% 1.56%
Other [Member]                              
Short-term Debt [Line Items]                              
Short-term borrowings $ 111       $ 182       $ 131       $ 111 $ 182 $ 131